that's what lance armstrong said for the first time ever. the seven-time tour de france winner admitted. the world's most famous cyclist talked about the allegations that have been plaguing him for years. this as the justice department extended a deadline as to whether to intervene. kurt gregory has more. >> reporter: a one-word answer. >> did you ever take banned substances to enhance your cycling performance? >> yes. >> reporter: after years of denials, seven-time tour de france winner lance armstrong admitted to oprah winfrey he did use performance enhancing drugs. >> in all seven of your tour de france victories, did you ever take banned substances or blood dope? >> yes. >> reporter: it's an admission armstrong had spent more than a decade denying. >> i've used this situation as one big lie that i repeated a lot of times. >> those who have followed armstrong say tonight's admission is self-serving. >> i believe that he's completely insincere except for this. he is starting to repair his own brand. >> reporter: a brand that has lost milli